the first and the last term of an AP containing 20 terms are 500 and 1000 respectively find the sum of 20 terms​?

Question

the first and the last term of an AP containing 20 terms are 500 and 1000 respectively find the sum of 20 terms​?

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Charlie 3 months 2021-10-15T14:49:52+00:00 2 Answers 0 views 0

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    0
    2021-10-15T14:50:54+00:00

    Answer:

    s20= n/2 (500 + 1000)

    = 15000

    Step-by-step explanation:

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    0
    2021-10-15T14:51:08+00:00

    Answer:

    S20=n÷2 (500+1000 )

    =10×1500

    =15000

    Step-by-step explanation:

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